Trains Boats and Streams Practice Test 1 with solutions

Question : 1 of 40

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A train running at the speed of 20 m/s crosses a pole in 24 seconds less than it requires to cross a platform thrice its length at the same speed. What is the length of the train?

160 m
180 m
270 m
340 m

Validate

Solution:

Let length of the train be x m; then

{x+3x}/{20}-x/{20}

= 24
⇒

{3x}/{20}

= 24
∴ x = 160 m

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